CN103016552B - A kind of bearing double-side dustproof lid technique for riveting and mould - Google Patents

Abstract

A one-time riveting mold for a double-sided dustproof cover of a bearing, which is characterized in that it includes a workbench, a guide mold column set on the workbench that can be concentrically matched with the inner ring of the bearing, and is concentrically sleeved outside the guide mold column and connected to the workbench. The lower stamping die with the platform offset, the upper stamping die that is concentrically set outside the guide die column and can slide up and down along the guide die column, and the pressure head located above the upper stamping die, the pressure head can push the upper stamping die, so that the upper The ring-shaped riveting nozzles of the stamping die and the lower stamping die can respectively push the two dust-proof covers and rivet the two dust-proof covers into the dust-proof groove of the bearing simultaneously. A one-time riveting process for a double-sided dust-proof cover of a bearing, which is characterized in that it includes the following steps: 1) Presetting the two dust-proof covers in the dust-proof grooves opened at the two ends of the bearing; The bearing of the dust cover is set concentrically on the guide mold column and is located between the upper and lower stamping dies; 3) riveting two dust covers at one time; 4) dismantling the bearing. The mold or process of the present invention can make the two dust-proof covers evenly stressed and simultaneously riveted on the bearing at one time, increasing the efficiency by more than 60%.

Description

One-time riveting process and mold for double-sided dustproof cover of bearing

Technical field:

The invention relates to a one-time riveting process and mold for a double-sided dustproof cover of a bearing.

Background technique:

Sealed bearings with dust caps are widely used in dusty and polluted environments of various machinery, or pre-filled with special grease inside the bearings according to different application conditions to prevent pre-filled grease from overflowing. There are dust-proof covers on both sides of the bearing, and the dust-proof covers are fixed to the outer ring of the bearing through a special riveting mold.

In the prior art, the left and right sides of the sealed bearing with dust caps on both sides are usually riveted with left and right dust caps. The specific riveting process includes the following two methods. Method 1: The riveting mold consists of the upper stamping die, Composed of a base and a mandrel, the riveting steps usually include 1) placing the bearing on the riveting mold; 2) riveting a dust cover; 3) taking out the bearing and turning it over; 4) placing the turned bearing on the riveting mold again 5) Rivet another dust cover; 6) Remove the bearing. Method 2: The riveting mold is only composed of the upper stamping die. When riveting, the side of the bearing that is not to be riveted with dust cover is directly placed on the press table, and the die is placed above the side of the bearing to be riveted with dust cover. After the dust cover is riveted on the side of the bearing opposite to the die, the bearing is turned over, and another dust cover is riveted.

The riveting process of the above method 1 has the following defects: the bearing is disassembled and assembled on the mold twice, and the efficiency is low. However, the riveting process of the second method has the following defects: the die is placed directly above the side of the dust cover of the bearing to be riveted, and the mold is only positioned by the arc curling of the dust cover, which is prone to riveting eccentricity and inclination; at the same time, The bearing is directly placed on the press table. When the lower end surface of the inner ring of the bearing protrudes from the end surface of the outer ring, the outer ring is in a suspended state. During the riveting process, the riveting force is transmitted from the raceway of the outer ring to the raceway of the inner ring through the rolling body. Deals impact damage.

Invention content:

The purpose of the present invention is to provide a one-time riveting die for double-sided dust-proof covers of bearings, which has a simple structure and can make the two dust-proof covers evenly stressed and riveted on the bearing at one time, increasing the efficiency by more than 60%.

A one-time riveting mold for a double-sided dustproof cover of a bearing, which is characterized in that it includes a workbench, a guide mold column set on the workbench that can be concentrically matched with the inner ring of the bearing, and is concentrically sleeved outside the guide mold column and connected to the workbench. The lower stamping die with the platform against each other, the upper stamping die that is concentrically set outside the guide die column and can slide up and down along the guide die post, and the pressure head located above the upper stamping die. The lower stamping die is provided with a functioning On the ring-shaped riveting nozzle of the first dust-proof cover of the bearing, the upper stamping die is provided with an annular riveting nozzle that can act on the other dust-proof cover of the bearing, and the pressure head can move downward and push the upper punch The die slides down along the guide die column, so that the annular rivets of the upper stamping die and the lower stamping die can simultaneously push and curl the two dust-proof covers of the bearings sleeved on the guide die-post and simultaneously press the two dust-proof covers Riveted into the dust-proof groove opened on the outer ring of the bearing.

The mold structure of the present invention is simple, and the upper and lower stamping dies can make the two dust-proof covers evenly stressed and riveted in the dust-proof groove on the outer ring of the bearing at the same time, without dismantling and assembling twice, increasing the efficiency by 60% above.

The present invention can be improved by following scheme:

The present invention also includes a riveting depth adjustment device for the dust cover, and the riveting depth adjustment device for the dust cover is arranged on the workbench, on one side of the guide mold column, and below the pressure head. The height of the dust cover riveting depth adjusting device can be adjusted according to the size of the bearing, so as to realize the limitation of the riveting axial depth of the upper and lower dies, and finally determine the riveting depth of the dust cover.

The riveting depth adjustment device of the dust cover includes an adjustment seat provided with an internal thread hole, an adjustment screw that matches the internal thread hole of the adjustment seat and can be screwed up and down along the internal thread hole, and is arranged on the adjustment seat and A lock nut that fits the adjusting screw. Simple structure and convenient adjustment.

The above-mentioned annular riveting mouth has a tapered pushing surface that can bend and expand the curling of the dust cover. The structure is simple, and the dust-proof cover can be quickly and conveniently riveted into the dust-proof groove provided on the outer ring of the bearing.

Another object of the present invention is to provide a one-time riveting process of double-sided dust-proof covers of bearings, which can make the two dust-proof covers evenly stressed and riveted on the bearing at one time, increasing the efficiency by more than 60%.

A one-time riveting process for double-sided dustproof covers of bearings, characterized in that it includes the following steps:

1) Pre-place the two dust-proof covers of the bearing in the dust-proof grooves opened at both ends of the bearing;

2) Set the bearing with two dust-proof covers in place concentrically on the guide die column of the above-mentioned riveting die and between the upper stamping die and the lower stamping die;

3) The pressure head moves downward and pushes the upper stamping die to slide down along the guide die column, so that the ring-shaped riveting nozzles of the upper stamping die and the lower stamping die simultaneously push the two dust-proof bearings of the bearings on the guide die column respectively. cover, so that the crimps of the two dust-proof covers are bent, expanded and riveted into the dust-proof groove on the outer ring of the bearing at the same time;

4) Remove the bearing.

The process of the present invention can make the two dust-proof covers evenly stressed and riveted on the bearing at the same time, increasing the efficiency by more than 60%.

Description of drawings:

Fig. 1 is a cross-sectional view of the structure of the present invention.

Fig. 2 is an exploded view of the assembly structure of the upper and lower stamping dies, bearings and guide die columns of the present invention.

Detailed ways:

As shown in Figures 1 and 2, a one-time riveting die for a bearing double-sided dust cover of the present invention includes a workbench 1, a guide mold column 2 arranged on the workbench 1 that can be concentrically matched with the inner ring of the bearing, a concentric The lower stamping die 3, which is set outside the guide die column and offset against the workbench, the upper stamping die 4, which is concentrically sleeved outside the guide die post and can slide up and down along the guide die post, and the pressure head 5 located above the upper stamping die , and the riveting depth adjustment device 6 for the dust cover.

The lower stamping die 3 protrudes upwards with an annular riveting nozzle 31 that can act on the bearing 7 and a dustproof cover 72, and the upper stamping die 4 protrudes downwards with a dustproof cap that can act on the bearing 7. The ring-shaped riveting nozzle 41 of the cover 71, the ring-shaped riveting nozzles 31, 41 all have a conical pushing surface that can bend and expand the curling of the dust cover; the pressure head 5 can move downward and push the upper stamping die 4 slide down along the guide die column 2, so that the ring-shaped riveting nozzles of the upper stamping die 4 and the lower stamping die 3 can respectively push the two dust-proof covers 71, 72 of the bearings arranged on the guide die column 2 and turn the two Dustproof cover is riveted in the dustproof groove that offers on bearing 7 outer rings simultaneously.

The riveting depth adjustment device 6 of the dust cover is arranged on the workbench 1 and is located on one side of the guide mold column 2 and below the indenter 5 . The dust cover riveting depth adjustment device 6 includes an adjustment seat 61 provided with an internal thread hole, an adjustment screw 62 that matches the internal thread hole of the adjustment seat and can be screwed up and down along the internal thread hole, and is located on the adjustment seat. The locking nut 63 that fits with the adjusting screw rod.

A one-time riveting process of the double-sided dustproof cover of the bearing of the present invention includes the following steps:

1) Pre-place the two dust-proof covers 71 and 72 of the bearing in the dust-proof grooves opened at both ends of the bearing;

2) Set the bearing 7 preset with two dust-proof covers concentrically on the guide mold column 2 of the above-mentioned riveting mold and between the upper punching die 4 and the lower punching die 3;

3) The pressure head 5 moves downward and pushes the upper stamping die 4 to slide down along the guide die column 2, so that the ring-shaped riveting tips of the upper stamping die 4 and the lower stamping die 3 are simultaneously pushed and set on the guide die post 2 The two dust-proof covers 71 and 72 of the bearing 7 make the crimps of the two dust-proof covers bend, bulge and riveted into the dust-proof groove provided on the outer ring of the bearing 7 at the same time;

4) Remove the bearing 7.

The above descriptions are only preferred embodiments of the present invention, and are not intended to limit the implementation scope of the present invention. All equivalent changes and modifications made according to the scope of the patent of the present invention fall within the scope covered by the patent of the present invention.

Claims (5)

1. bearing double-side dustproof lid riveting die, it is characterized in that: comprise worktable, be located on worktable can the guiding module post that mate concentric on bearing inner race, concentric locking collar is located at the outer and lower stamping die offseted with worktable of guiding module post, concentric locking collar is located at guiding module post outward also can along the upper stamping die of the upper and lower slippage of guiding module post, and the pressure head be positioned at above stamping die, described lower stamping die is convex is provided with the annular riveting mouth that can act on described bearing one dust cover, described upper stamping die is convexly equipped with the annular riveting mouth that can act on described another dust cover of bearing downwards, pressure head can move down and pushing tow on stamping die along the downward slippage of guiding module post, make the annular riveting mouth of stamping die and lower stamping die can in pushes against sleeve is located at the bearing on guiding module post respectively simultaneously two dust cover crimpings the simultaneously riveting of two dust covers being entered dustproof groove that bearing outer ring is offered.

2. a kind of bearing double-side dustproof lid according to claim 1 riveting die, it is characterized in that: also comprise dust cover riveted depth adjustment, this dust cover riveted depth adjustment to be located on described worktable and to be positioned at the side of described guiding module post and to be positioned at the below of described pressure head.

3. a kind of bearing double-side dustproof lid according to claim 2 riveting die, is characterized in that: described dust cover riveted depth adjustment comprises an adjustment seat offering interior threaded hole, matches and can screw the adjusting screw rod of adjustment up and down along interior threaded hole and be located at the locking nut coordinated in adjustment seat and with adjusting screw rod with adjustment seat interior threaded hole.

4. a kind of bearing double-side dustproof lid riveting die according to any one of claims 1 to 3, is characterized in that: the taper pushing tow face that described annular riveting mouth has can be made the crimping of dust cover bend, rise outward.

5. bearing double-side dustproof lid technique for riveting, is characterized in that comprising the steps:

1) two dust covers of bearing are preset in the dustproof groove being opened in bearing two end faces;

2) on the guiding module post bearing concentric locking collar presetting two dust covers being located at the riveting die described in any one of Claims 1-4 and between upper stamping die and lower stamping die;

3) pressure head move down and pushing tow on stamping die along the downward slippage of guiding module post, make the annular riveting mouth of stamping die and lower stamping die simultaneously respectively pushing be located at two dust covers of bearing on guiding module post, the crimping of two dust covers is bent, to rise outward and riveting simultaneously enters to hold in dustproof groove that axle outer ring is offered;

4) tear open and move bearing.